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Changes for page ANU Seismic Data Loggers

Last modified by robert on 2025/04/24 14:58
From version 40.1
edited by robert
on 2025/03/03 18:11
Change comment: There is no comment for this version
To version 43.1
edited by robert
on 2025/03/03 18:26
Change comment: There is no comment for this version

Summary

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3 3  ANU has designed and built three generations of seismic data recorders, two of which (the small yellow TerraSAWR and the larger beige LPR-200) are still in use today. Despite their contrasting appearance, they both use the same software, data cards, and have the same instrument response.
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5 5  
6 6  = Data Card Formatting and Information =
7 7  
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93 93  
94 94  This menu displays the status of the stations' GPS connection. The screen lists; UTC time, UTC date, latitude, longitude, altitude, number of satellite connections, and SNR.
95 95  
96 -==== Upon setup ====
103 +* Check that the station is connected to satellites
97 97  
98 -- Check that the station is connected to satellites
99 99  
100 -
101 101  == SD Information ==
102 102  
103 103  The menu lists if the SD card has been initialised, as well as the capacity and space free on the memory card. See "Data card formatting" (above) to see how to format and initialise the inserted SD card.
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115 115  
116 116  The seismometer model and serial number (up to 10 characters) can be set. Seismometer model options include:
117 117  
118 -- Trillium Compact
123 +* Trillium Compact (same for 20 and 120)
124 +* CMG - 3ESP
125 +* Guralp 40T
126 +* LE-3D Lite
127 +* Mark L4C
128 +* Mark L4
119 119  
120 -- CMG - 3ESP
121 -
122 -- Guralp 40T
123 -
124 -- LE-3D Lite
125 -
126 -- Mark L4C
127 -
128 -- Mark L4
129 -
130 130  Additionally, the following settings can be used in place of the seismometer model types: +/- 20V, +/- 10V, +/- 5V
131 131  
132 132  The record on restart option ensures that if the logger dies and is powered back up whilst in the field (due to battery charging cycles or other causes) that the recording will resume.
133 133  
134 -==== Upon setup ====
134 +* Set the sampling rate, station identifier, and network code. Set the appropriate seismometer type. Most importantly, ensure the record on restart setting is checked.
135 135  
136 -- Set the sampling rate, station identifier, and network code. Set the appropriate seismometer type. Most importantly, ensure the record on restart setting is checked.
137 -
138 138  (% class="box errormessage" %)
139 139  (((
140 140  NOTE: Ensure the 'RECORD ON RESTART' option is marked with a cross.
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145 145  
146 146  == STA/LTA Configuration ==
147 147  
148 -The Short Term Average and Long Term Average Configuration screen is no longer used.
146 +The Short Term Average and Long Term Average Configuration screen.. this is a relic for when people weren't recording continuously. Not advised!
149 149  
150 -
151 151  = LogFile Conversion Script =
152 152  
153 153  Both the TSAWR and LPR-200 write logging information as a binary "dat" file which includes GPS time syncs, temperatures, battery power, and position. To convert them into ASCII you can read, use [[THIS PYTHON SCRIPT>>http://auspass.edu.au/field/anusr_log.py]].
154 154  
155 -
156 156  = Instrument Response =
157 157  
158 158  Both the TerraSAWR and LPR-200 use the same ADS1281 analog-to-digital converter chip and are designed to have identical instrument response. Depending on the output sample rate (e.g. 100 Hz, 250 Hz, 500 Hz, 1000 Hz) amplitude response is consistently flat up to ~~100 Hz but phase response can vary above 1 Hz at 100 Hz (or 10 Hz at 250 Hz).
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166 166  
167 167  = ANU TerraSAWR (Gen 3, FW 3.5a, 2017?- current) =
168 168  
169 -Text here
165 +Words to describe the TSAWR would go here, if needed
170 170  
171 -== Sub-paragraph ==
167 + 
172 172  
173 -XXXX
174 174  
175 -== Sub-paragraph ==
176 -
177 -xx
178 -
179 -=== Sub-sub paragraph ===
180 -
181 -x
182 -
183 -
184 184  = ANU LPR-200 (Gen 2, FW 2.6a/2.7a, 2013 - current) =
185 185  
186 -Text here
172 +Ditto the mighty LPR!
187 187  
188 -== Sub-paragraph ==
189 189  
190 -x
191 -
192 -== Sub-paragraph ==
193 -
194 -x
195 -
196 -
197 197  = ANU "ANUSR" (Gen 1, 2003? - 2013?) =
198 198  
199 -x
177 +This logger has been retired for a long time and has a different instrument response.
200 200  
179 +
201 201  = References =
202 202  
203 203  * [[PDF Manual>>http://auspass.edu.au/field/LPR-200_Instruction_Manual.pdf]]
204 -~)~)~)
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257 257  [[image:LPR battery.jpg]]
258 258  )))
259 259  )))
260 -
261 -~)~)~)
239 +)))